diff --git a/19_kernel_heap/README.md b/19_kernel_heap/README.md
index 430ff2fb..0b4e2348 100644
--- a/19_kernel_heap/README.md
+++ b/19_kernel_heap/README.md
@@ -828,7 +828,7 @@ diff -uNr 18_backtrace/kernel/src/console.rs 19_kernel_heap/kernel/src/console.r
 +
 +    static FIRST_SWITCH: InitStateLock<bool> = InitStateLock::new(true);
 +    FIRST_SWITCH.write(|first| {
-+        if *first == true {
++        if *first {
 +            *first = false;
 +
 +            buffer_console::BUFFER_CONSOLE.dump();
diff --git a/19_kernel_heap/kernel/src/console.rs b/19_kernel_heap/kernel/src/console.rs
index 20a89cd7..ff1d8ddc 100644
--- a/19_kernel_heap/kernel/src/console.rs
+++ b/19_kernel_heap/kernel/src/console.rs
@@ -77,7 +77,7 @@ pub fn register_console(new_console: &'static (dyn interface::All + Sync)) {
 
     static FIRST_SWITCH: InitStateLock<bool> = InitStateLock::new(true);
     FIRST_SWITCH.write(|first| {
-        if *first == true {
+        if *first {
             *first = false;
 
             buffer_console::BUFFER_CONSOLE.dump();